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Thomas Lohnes // Getty Images

Behold, the Sideways Elevator

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Thomas Lohnes // Getty Images

Elevator company ThyssenKrupp has developed a "sideways elevator" known as MULTI. In many respects it's similar to a standard elevator—it's a car that's designed to move people between floors in buildings. But this elevator has two key engineering differences. First, it uses motors on tracks to move the cars, rather than a cable pulling the cars up and down. Second, the tracks themselves can rotate or be built in orientations that aren't just up and down. That last bit is what makes this so interesting.

In a conventional elevator setup, architects devote a columnar portion of the building to elevator shafts. Those are then outfitted with cabling and motors to move the elevator cars up and down between floors. There's plenty of fancy math engineers build in to optimize the availability and speed of those elevators. But typically, the biggest limitation is that for each elevator shaft, there is just one elevator car. (There are multi-car-per-shaft elevators known as "twin elevators," but the cars generally block one another in the shaft.)

MULTI allows multiple cars per shaft, with the ability to scoot cars sideways as needed, or even to build a zig-zagging shaft structure. This allows cars to get out of the way of each other, enabling all kinds of interesting algorithmic changes. The system could put multiple cars near high-traffic areas—and those areas might change based on time of day or other factors. Priority cars might be able to zip along, while others moved to the side to wait. A car might move sideways and enter another shaft, if that would create a faster path. Or imagine a dual-tower building—it could have a sideways elevator shaft (or many of them) to connect the towers. Imagine the time savings in traveling between upper floors of the two buildings, when such a linkage exists! As a broad concept, MULTI basically removes the idea of the elevator "shaft" and replaces it with something more like lanes on a road—and adds the ability to move along two axes rather than just one.

In the video below, Tom Scott visits a ThyssenKrupp testing tower to learn how it works. (He also makes it clear this is not sponsored content—it's a genuinely fascinating bit of engineering. It does seem the company is doing its public relations homework, though, as the first functional unit went online on June 22, 2017 in Rottweil, Germany.)

Behold:

If video isn't your thing, read up on the technology. While it will be many years before this kind of technology becomes commonplace, you may be able to tell your kids: "In my day, elevators only went up and down!"

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Slow Wi-Fi? It Could Be Your Neighbor's Fault
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If your Wi-Fi connection remains interminably slow no matter how many times you restart it, you can probably blame your neighbor. It could be that there are too many people using Wi-Fi connections on the same channel, even if you're all on different networks. But, as Tech Insider teaches us in the video below, there is a way to circumvent this, returning you to the prime TV-streaming Wi-Fi speeds of your dreams. (These instructions apply to Mac users, but if you've got Windows, How-To Geek recommends a tool called the Xirrus Wi-Fi Inspector to do the same job.) It seems like a lot of steps at first, but it'll be worth it—we promise.

If you’ve got a Mac, hold the Option key while clicking the Wi-Fi symbol in your top menu bar. Go to “Open Wireless Diagnostics,” then when that opens, go up to the top left menu bar and click the drop-down menu “Window > Scan.” That will open up a window with all the nearby Wi-Fi networks. Click the “Scan Now” button on the bottom right, and your computer should recommend the best channels for you to use—say, you’re on Channel No. 1, but the best 2.4GHz channel is No. 3. Tech Insider recommends writing those down (there are options for both 2.4GHz channels and 5GHz channels).

Now, you’ll need to break out your iPhone. Download the AirPort Utility app, and go to your phone’s settings. Scroll down to the AirPort Utility app in your app list, and enable “WiFi Scanner.” Use the app to scan your house for Wi-Fi networks and note which channels are commonly used by your neighbors’ networks. (If you don’t have an iPhone, you can also use Acrylic Wi-Fi for Android or Windows phones.) This will help you avoid the most congested networks.

Then, log onto your router on your computer by typing your router’s IP address into your browser, just like you would any web address. From there, go into Wireless Settings, and change the channel your network operates on to one of the recommended options that you wrote down from your computer's diagnostics window earlier. And don’t forget to save!

This should help you get a faster internet connection by minimizing the amount of interference from other networks around you. Because the best neighbors are the ones who don't slow down Game of Thrones for you.

See the process step-by-step in the video below.

[h/t Tech Insider]

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BioLite
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This 'Smokeless' Fire Pit Promises a More Efficient Burn
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BioLite

For thousands of years, people have gathered around open flames to cook food, find warmth, and share stories deep into the night. Campfires have been around since the dawn of humanity, but what if there was a way to use modern technology to make them even better? The people at BioLite believe they've found one.

The FirePit is the outdoor gadget startup's answer to the recreational, backyard fire. It offers the same benefits as a more conventional product: a space for building wood or charcoal fires, a removable grate for grilling, and metal screens on each side to protect onlookers from embers. But the yellow battery pack is what sets it apart from anything else on the market. With the press of a button, a fan inside the FirePit stokes a hotter, more efficient blaze without producing all of the smoke and soot people are used to.

Couple sitting by a firepit on the beach.
BioLite

"Air injection makes the fire burn more completely," Ryan Gist, one of the lead engineers on the project, told Mental Floss. "So you basically get all the energy out of your fuel." The result is a fire you can enjoy without worrying about your eyes and throat burning, moving your chair every five minutes to avoid a gust of smoke, or having your clothes stink for weeks.

It also makes for a fire capable of burning longer and brighter with less wood. Smoke is made of tiny fuel particles that haven't fully burned up. Using a fan, the FirePit can draw that runaway fuel back into the fire before it has a chance to escape. "It's like when you're stuck on the highway behind a truck and it's got black stuff coming out of the tailpipe," BioLite marketing director Erica Rosen told Mental Floss. "When you see black stuff coming out of a fire, it's the same thing. So what we've done is, we've given fire a tuneup."

FirePit's built-in fan makes the fire easy to control. If campfire gazers want to see big, roaring flames through the box's X-ray mesh, they can turn the air down low. The higher fan setting produces a smaller, more intense burn, which is perfect for chilly autumn nights. Adjusting the blaze can be done remotely with the BioLite Energy app or manually from the control panel on top of the battery pack.

People sitting by a fire.
BioLite

BioLite designed the FirePit for backyards, but its foldable legs make it convenient to carry to the beach, a campsite, or anywhere else where you might bring a cooler of the same size. Once it's cooled down after an evening of grilling hot dogs and toasting marshmallows, the pit fits neatly into its solar panel case, where it can recharge in time for the following night (the battery also features a USB plug for charging indoors).

The FirePit recently debuted on Kickstarter, where it's available along with its solar carrying case for a special deal of $169 (once the first 300 FirePits go, it will be sold for the regular price of $199). To help the campaign reach its $100,000 funding goal, you can reserve yours today with shipping estimated for May of next year.

Skewers cooking on a grill.
BioLite

All images courtesy of BioLite.

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